- trace_mpath: add simple tex export for visualization.
- trace_mpath: add simple tex export for visualization.

tectronics/scalaris,digshock/scalaris,digshock/scalaris,digshock/scalaris,seyyed/scalaris,seyyed/scalaris,seyyed/scalaris,seyyed/scalaris,digshock/scalaris,tectronics/scalaris,tectronics/scalaris,seyyed/scalaris,seyyed/scalaris,tectronics/scalaris,tectronics/scalaris,tectronics/scalaris,digshock/scalaris,tectronics/scalaris,seyyed/scalaris,digshock/scalaris,digshock/scalaris